diff --git a/OdeWorld.cc b/OdeWorld.cc
index 3847e4a..f631264 100644
--- a/OdeWorld.cc
+++ b/OdeWorld.cc
@@ -520,6 +520,12 @@ void OdeWorld::Object::finalize()
 {
     if (m_body != 0)
     {
+#if 0
+        cerr << "Warning: translating mass by ("
+            << (-m_mass.c[0]) << ", "
+            << (-m_mass.c[1]) << ", "
+            << (-m_mass.c[2]) << ")" << endl;
+#endif
         dMassTranslate(&m_mass, -m_mass.c[0], -m_mass.c[1], -m_mass.c[2]);
         dBodySetMass(m_body, &m_mass);
     }